As the 2020 U.S. presidential election approaches, pundits in the United States are naturally looking back to 2016 in an effort to predict just what form Russian interference will take this time around—especially after former special counsel Robert Mueller’s testimony on Capitol Hill last month, during which he warned, “They’re doing it as we sit here.” To understand the threat, Americans would do well to look at previous Russian disinformation campaigns. To gain a fuller picture of just what Russian interference could look like in 2020, it is necessary to look back at the Kremlin’s hybrid war in Ukraine from 2014 to 2016.